The valve seals most likely.
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They are in the water because the sealions chased them away.
Bad valve seals will that. You can purchase oil treatment which allows partially restore failing gaskets. But if the engine is doing that for a while, you need to replace the seals.
cylinder, ram, seals and gland cap
Its the gasket that seals the cylinder head to the engine block.
You have overfilled the engine with oil. 4 cylinder takes 3.8 quarts max. But when you add oil you should always check with the dipstick if the level is proper. In meantime you need to adjust the level properly because if you do not all your seals will have to be replaced.
Cylinder seals are a work of art. They showed stories of great battles, and many other scenes. It showed the times, good and bad of the Sumerians. Cylinder seals were also drawings which also made them a work of art, while telling ancient stories at the same time. That's how cylinder seals developed into a work of art
Timing belt tensioner, and its spring. Oil seals for both camshaft and crankshaft. And it's highly recommended to replace the water pump.
Your engine burns some oil. It's one of most often problem with Camry engine, usually replacement of valve seals solve it. If you do not notice change in the oil level, do not worry many people have it even on new cars.
To replace the valve stem seals with the head on you must bring each cylinder up to top dead center, pressurize the cylinder with an air chuck screwed into the spark plug hole. (this prevents the valves from dropping into the cylinder) Now the seals on that cylinder can be replaced. The process is repeated on each cylinder. Note: you must prevent the engine from rotating when the cylinder is pressurized.
Seals on the hydraulic cylinder keep the pressure, which are needed to lift the suspension in the air. If they leak, they lose pressure and won't be able to lift the vehicle.